US PATENT SUBCLASS 348 / 774
.~.~.~.~.~ Deformed into diffraction grating (e.g., using electron beam)

Current as of: June, 1999
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348 /   HD   TELEVISION

739  DF  VIDEO DISPLAY {13}
744  DF  .~ Projection device {7}
759  DF  .~.~ Single light modulator {5}
770  DF  .~.~.~ Deformable medium {4}
773  DF  .~.~.~.~ Fluid medium {1}
774.~.~.~.~.~ Deformed into diffraction grating (e.g., using electron beam)

DEFINITION

Classification: 348/774

Deformed into diffraction grating (e.g., using electron beam):

(under subclass 773) Subject matter wherein the fluid medium is deformed into a system of close equidistant and parallel lines whereby the light ray is diffracted to produce fringes of parallel light and dark or colored bands.

(1) Note. For example, the fluid medium is deformed by bombarding with a beam consisting of elementary particles of negative electric charge.